Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at √s = 13 TeV
Name
JHEP01(2018)097.pdf
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Author(s)
CMS Collaboration
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Date Issued
April 12, 2018
Journal
Journal of High Energy Physics
Publisher
Springer International Publishing AG
Citation
Sirunyan, A. M. et al. “Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at √s = 13 TeV.” Journal of High Energy Physics 2018, 1 (January 2018): 97 © 2018 The Author(s)
Version
Final published version
Abstract
A search for narrow vector resonances decaying into quark-antiquark pairs is presented. The analysis is based on data collected in proton-proton collisions at s√=13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb[superscript −1]. The hypothetical resonance is produced with sufficiently high transverse momentum that its decay products are merged into a single jet with two-prong substructure. A signal would be identified as a peak over a smoothly falling background in the distribution of the invariant mass of the jet, using novel jet substructure techniques. No evidence for such a resonance is observed within the mass range of 50-300 GeV. Upper limits at 95% confidence level are set on the production cross section, and presented in a mass-coupling parameter space. The limits further constrain simplified models of dark matter production involving a mediator interacting between quarks and dark matter particles through a vector or axial-vector current. In the framework of these models, the results are the most sensitive to date, extending for the first time the search region to masses below 100 GeV. Keywords: Jet substructure; Hadron-Hadron scattering (experiments); Dark matter Jets
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1007/JHEP01(2018)097
